As per the subject:

I use luks-crypt to encrypt my home directory. Of course I would like
to make backups. These must, of course, also be encrypted. I have
tried duplicity, but when many changes have occured, this is
unbearably slow (being on a laptop). What would be the best solution
to back up with encryption barring duplicity?

Regards,
Jan Seeger
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gentoo-user@(protected)